We would have a different spin on Batterygate where Apple is greedily telling people to replace their batteries when they allegedly still work just fine, because all they care about is selling more batteries and making more profit.
What's the relevance?
Then you claim that thermal throttling is somehow unique to Apple yet every device these days does such thermal management, and such things we’ve even visible at the user code level (e.g. selection of vector instruction use).
And when you look at the trade shipping any product, and what defects are considered acceptable... you write as if you have zero experience or visibility into any of these issues.
So what’s the relevance? Your argument is unconvincing because you haven’t made any effort to justify it.
So to be consistent, he should admit that in both cases Apple is in the wrong and user-hostile. Apple could avoid the issue for the majority of users by increasing battery size and quality (Samsung has said that its S8 battery will only drop 5% of its charge after 3 years, for instance).
Instead, Apple chooses the easy and more profitable way out - degrading users' performance, which coincidentally also happens to get users to buy iPhones more often.
There is a false dilemma not just between "conspiracy vs not conspiracy", but also between "performance vs battery life", a dilemma manufactured by Apple itself.